[u/mrichter/AliRoot.git] / ITS / AliITSVertexer3D.h

#ifndef ALIITSVERTEXER3D_H
#define ALIITSVERTEXER3D_H

#include<AliITSVertexer.h>

///////////////////////////////////////////////////////////////////
//                                                               //
// Class for primary vertex finding  (3D reconstruction)         //
//                                                               //
///////////////////////////////////////////////////////////////////

/* $Id$ */

#include <TClonesArray.h>
#include <TRandom3.h>
#include <AliESDVertex.h>
#include <TH3F.h>
#include <TBits.h>

class AliITSVertexer3D : public AliITSVertexer {

 public:

  AliITSVertexer3D();
  virtual ~AliITSVertexer3D();
  virtual AliESDVertex* FindVertexForCurrentEvent(TTree *itsClusterTree);
  void FindVertex3DIterative();
  void FindVertex3DIterativeMM();
  void FindVertex3D(TTree *itsClusterTree);
  AliESDVertex GetVertex3D() const {return fVert3D;}
  virtual void PrintStatus() const;
  static Bool_t DistBetweenVertices(AliESDVertex &a, AliESDVertex &b, Double_t test, Double_t &dist);
  void SetWideFiducialRegion(Double_t dz = 40.0, Double_t dr=2.5){
    SetCoarseMaxRCut(dr);
    SetZCutDiamond(dz);
  }
  void SetNarrowFiducialRegion(Double_t dz = 0.5, Double_t dr=0.5){
    SetMaxRCut(dr);
    SetMaxZCut(dz);
  }
  void SetDeltaPhiCuts(Double_t dphiloose=0.5, Double_t dphitight=0.025){
    SetCoarseDiffPhiCut(dphiloose);
    SetDiffPhiMax(dphitight);
  }
  void SetCoarseDiffPhiCut(Double_t dphi = 0.5){fCoarseDiffPhiCut=dphi;}
  void SetFineDiffPhiCut(Double_t dphi = 0.05){fFineDiffPhiCut=dphi;}
  void SetCutOnPairs(Double_t cp = 0.15){fCutOnPairs = cp;}
  void SetCoarseMaxRCut(Double_t rad = 2.5){fCoarseMaxRCut=rad;}
  void SetMaxRCut(Double_t rad = 0.5){fMaxRCut=rad;}
  void SetMaxRCutAlgo2(Double_t rad = 0.2){fMaxRCut2=rad;}
  void SetZCutDiamond(Double_t zcut = 40.0){fZCutDiamond=zcut;}
  void SetMaxZCut(Double_t dz = 0.5){fMaxZCut=dz;}
  void SetDCACut(Double_t dca=0.1){fDCAcut=dca;} 
  void SetDiffPhiMax(Double_t pm = 0.025){fDiffPhiMax = pm;}
  void SetMeanPSelTracks(Double_t pGeV=0.875){fMeanPSelTrk = pGeV;}
  void SetMeanPtSelTracks(Double_t ptGeV=0.630){fMeanPtSelTrk = ptGeV;}
  void SetMeanPPtSelTracks(Double_t fieldTesla);
  void SetMinDCAforPileup(Double_t mindist=0.1) {fDCAforPileup=mindist;}
  void SetDeltaPhiforPileup(Double_t dphi=0.01) {fDiffPhiforPileup=dphi;}
  void SetPileupAlgo(UShort_t optalgo=1){fPileupAlgo=optalgo;}
  void SetBinSizeR(Double_t siz=0.1){fBinSizeR=siz;}
  void SetBinSizeZ(Double_t siz=0.8){fBinSizeZ=siz;}
  void SetMaxNumOfClusters(Int_t ncl){fMaxNumOfCl=ncl;}
  Int_t GetMaxNumOfClusters() const {return fMaxNumOfCl;}

protected:
  AliITSVertexer3D(const AliITSVertexer3D& vtxr);
  AliITSVertexer3D& operator=(const AliITSVertexer3D& /* vtxr */);
  Int_t FindTracklets(TTree *itsClusterTree, Int_t optCuts);
  Int_t Prepare3DVertex(Int_t optCuts);
  void ResetVert3D();
  void FindPeaks(TH3F* histo, Double_t *peak, Int_t &nOfTracklets, Int_t &nOfTimes);
  void PileupFromZ();
  void MarkUsedClusters();
  Int_t RemoveTracklets();
  void  FindOther3DVertices(TTree *itsClusterTree);

  enum {kMaxCluPerMod=250};

  TClonesArray fLines;      //! array of tracklets
  AliESDVertex fVert3D;        // 3D Vertex
  Double_t fCoarseDiffPhiCut; // loose cut on DeltaPhi for RecPoint matching
  Double_t fFineDiffPhiCut; // tight value of DeltaPhi for RP matching (2nd method) 
  Double_t fCutOnPairs; //cut on distance between pairs of tracklets 
  Double_t fCoarseMaxRCut; // cut on tracklet DCA to Z axis
  Double_t fMaxRCut;     // cut on tracklet DCA to beam axis
  Double_t fMaxRCut2;    // cut on tracklet DCA to beam axis - algo2
  Double_t fZCutDiamond;   // cut on +-Z of the diamond
  Double_t fMaxZCut;   // cut on Z distance from estimated vertex
  Double_t fDCAcut; // cut on tracklet to tracklet and tracklet to vertex DCA
  Double_t fDiffPhiMax;     // Maximum delta phi allowed among corr. pixels
  Double_t fMeanPSelTrk; // GeV, mean P for tracks with dphi<0.01 rad
  Double_t fMeanPtSelTrk; // GeV, mean Pt for tracks with dphi<0.01 rad
  TBits   fUsedCluster;  // flag for used clusters in vertex calculation
  TH1F *fZHisto;           //! histogram with coarse z distribution
  Double_t  fDCAforPileup;  // Minimum DCA to 1st vertex for pileup tracklets 
  Double_t  fDiffPhiforPileup;  // Cut on delta phi for pileup 
  Double_t  fBinSizeR;      // Histo3D bin size along radius
  Double_t  fBinSizeZ;      // Histo3D bin size along z
  UShort_t fPileupAlgo;    // Algo for pileup identification
                           // 0->VertexerZ pileup algo
                           // 1->Unused RecPoints algo
  Int_t fMaxNumOfCl;       // max number of clusters on L1 or L2
  Bool_t fDoDownScale;     // Control downscaling of tracklets in high mult
  TRandom3 *fGenerForDownScale; // randomnumber generator fordownscaling

  static const Int_t fgkMaxNumOfClDefault; // Default max number of clusters

  ClassDef(AliITSVertexer3D,14);

};

#endif
Commit	Line	Data
	1	#ifndef ALIITSVERTEXER3D_H
	2	#define ALIITSVERTEXER3D_H
	3
	4	#include<AliITSVertexer.h>
	5
	6	///////////////////////////////////////////////////////////////////
	7	// //
	8	// Class for primary vertex finding (3D reconstruction) //
	9	// //
	10	///////////////////////////////////////////////////////////////////
	11
	12	/* $Id$ */
	13
	14	#include <TClonesArray.h>
	15	#include <TRandom3.h>
	16	#include <AliESDVertex.h>
	17	#include <TH3F.h>
	18	#include <TBits.h>
	19
	20	class AliITSVertexer3D : public AliITSVertexer {
	21
	22	public:
	23
	24	AliITSVertexer3D();
	25	virtual ~AliITSVertexer3D();
	26	virtual AliESDVertex* FindVertexForCurrentEvent(TTree *itsClusterTree);
	27	void FindVertex3DIterative();
	28	void FindVertex3DIterativeMM();
	29	void FindVertex3D(TTree *itsClusterTree);
	30	AliESDVertex GetVertex3D() const {return fVert3D;}
	31	virtual void PrintStatus() const;
	32	static Bool_t DistBetweenVertices(AliESDVertex &a, AliESDVertex &b, Double_t test, Double_t &dist);
	33	void SetWideFiducialRegion(Double_t dz = 40.0, Double_t dr=2.5){
	34	SetCoarseMaxRCut(dr);
	35	SetZCutDiamond(dz);
	36	}
	37	void SetNarrowFiducialRegion(Double_t dz = 0.5, Double_t dr=0.5){
	38	SetMaxRCut(dr);
	39	SetMaxZCut(dz);
	40	}
	41	void SetDeltaPhiCuts(Double_t dphiloose=0.5, Double_t dphitight=0.025){
	42	SetCoarseDiffPhiCut(dphiloose);
	43	SetDiffPhiMax(dphitight);
	44	}
	45	void SetCoarseDiffPhiCut(Double_t dphi = 0.5){fCoarseDiffPhiCut=dphi;}
	46	void SetFineDiffPhiCut(Double_t dphi = 0.05){fFineDiffPhiCut=dphi;}
	47	void SetCutOnPairs(Double_t cp = 0.15){fCutOnPairs = cp;}
	48	void SetCoarseMaxRCut(Double_t rad = 2.5){fCoarseMaxRCut=rad;}
	49	void SetMaxRCut(Double_t rad = 0.5){fMaxRCut=rad;}
	50	void SetMaxRCutAlgo2(Double_t rad = 0.2){fMaxRCut2=rad;}
	51	void SetZCutDiamond(Double_t zcut = 40.0){fZCutDiamond=zcut;}
	52	void SetMaxZCut(Double_t dz = 0.5){fMaxZCut=dz;}
	53	void SetDCACut(Double_t dca=0.1){fDCAcut=dca;}
	54	void SetDiffPhiMax(Double_t pm = 0.025){fDiffPhiMax = pm;}
	55	void SetMeanPSelTracks(Double_t pGeV=0.875){fMeanPSelTrk = pGeV;}
	56	void SetMeanPtSelTracks(Double_t ptGeV=0.630){fMeanPtSelTrk = ptGeV;}
	57	void SetMeanPPtSelTracks(Double_t fieldTesla);
	58	void SetMinDCAforPileup(Double_t mindist=0.1) {fDCAforPileup=mindist;}
	59	void SetDeltaPhiforPileup(Double_t dphi=0.01) {fDiffPhiforPileup=dphi;}
	60	void SetPileupAlgo(UShort_t optalgo=1){fPileupAlgo=optalgo;}
	61	void SetBinSizeR(Double_t siz=0.1){fBinSizeR=siz;}
	62	void SetBinSizeZ(Double_t siz=0.8){fBinSizeZ=siz;}
	63	void SetMaxNumOfClusters(Int_t ncl){fMaxNumOfCl=ncl;}
	64	Int_t GetMaxNumOfClusters() const {return fMaxNumOfCl;}
	65
	66	protected:
	67	AliITSVertexer3D(const AliITSVertexer3D& vtxr);
	68	AliITSVertexer3D& operator=(const AliITSVertexer3D& /* vtxr */);
	69	Int_t FindTracklets(TTree *itsClusterTree, Int_t optCuts);
	70	Int_t Prepare3DVertex(Int_t optCuts);
	71	void ResetVert3D();
	72	void FindPeaks(TH3F* histo, Double_t *peak, Int_t &nOfTracklets, Int_t &nOfTimes);
	73	void PileupFromZ();
	74	void MarkUsedClusters();
	75	Int_t RemoveTracklets();
	76	void FindOther3DVertices(TTree *itsClusterTree);
	77
	78	enum {kMaxCluPerMod=250};
	79
	80	TClonesArray fLines; //! array of tracklets
	81	AliESDVertex fVert3D; // 3D Vertex
	82	Double_t fCoarseDiffPhiCut; // loose cut on DeltaPhi for RecPoint matching
	83	Double_t fFineDiffPhiCut; // tight value of DeltaPhi for RP matching (2nd method)
	84	Double_t fCutOnPairs; //cut on distance between pairs of tracklets
	85	Double_t fCoarseMaxRCut; // cut on tracklet DCA to Z axis
	86	Double_t fMaxRCut; // cut on tracklet DCA to beam axis
	87	Double_t fMaxRCut2; // cut on tracklet DCA to beam axis - algo2
	88	Double_t fZCutDiamond; // cut on +-Z of the diamond
	89	Double_t fMaxZCut; // cut on Z distance from estimated vertex
	90	Double_t fDCAcut; // cut on tracklet to tracklet and tracklet to vertex DCA
	91	Double_t fDiffPhiMax; // Maximum delta phi allowed among corr. pixels
	92	Double_t fMeanPSelTrk; // GeV, mean P for tracks with dphi<0.01 rad
	93	Double_t fMeanPtSelTrk; // GeV, mean Pt for tracks with dphi<0.01 rad
	94	TBits fUsedCluster; // flag for used clusters in vertex calculation
	95	TH1F *fZHisto; //! histogram with coarse z distribution
	96	Double_t fDCAforPileup; // Minimum DCA to 1st vertex for pileup tracklets
	97	Double_t fDiffPhiforPileup; // Cut on delta phi for pileup
	98	Double_t fBinSizeR; // Histo3D bin size along radius
	99	Double_t fBinSizeZ; // Histo3D bin size along z
	100	UShort_t fPileupAlgo; // Algo for pileup identification
	101	// 0->VertexerZ pileup algo
	102	// 1->Unused RecPoints algo
	103	Int_t fMaxNumOfCl; // max number of clusters on L1 or L2
	104	Bool_t fDoDownScale; // Control downscaling of tracklets in high mult
	105	TRandom3 *fGenerForDownScale; // randomnumber generator fordownscaling
	106
	107	static const Int_t fgkMaxNumOfClDefault; // Default max number of clusters
	108
	109	ClassDef(AliITSVertexer3D,14);
	110
	111	};
	112
	113	#endif